Davis J D
E. W. Bourne Behavioral Research Laboratory, New York Hospital-Cornell Medical Center, White Plains 10960, USA.
Am J Physiol. 1996 Apr;270(4 Pt 2):R793-800. doi: 10.1152/ajpregu.1996.270.4.R793.
The probability distributions of bouts of licking and pauses between them in rats ingesting sucrose solutions were studied to determine if the durations of these ingestive and noningestive acts were controlled by a deterministic or probabilistic decision rule in the central nervous system. The duration of the bouts of licking could be modeled by a Poisson process, indicating that these bouts were terminated by a probabilistic rule. Three different types of pauses terminated the bouts of licking. Each averaged 0.3, 1.5, or 50-60 s in duration. The two longer pauses could be modeled by a Poisson process, indicating that their termination was also probabilistic in nature. The shorter pauses averaging 0.3 s could not and are more likely deterministically controlled.
研究了摄入蔗糖溶液的大鼠舔舐发作及其之间停顿的概率分布，以确定这些摄取和非摄取行为的持续时间是否由中枢神经系统中的确定性或概率性决策规则控制。舔舐发作的持续时间可以用泊松过程建模，表明这些发作是由概率规则终止的。三种不同类型的停顿终止了舔舐发作。每种停顿的平均持续时间分别为0.3、1.5或50 - 60秒。两个较长的停顿可以用泊松过程建模，表明它们的终止本质上也是概率性的。平均持续0.3秒的较短停顿则不能，且更可能是由确定性控制的。
